Use numpy 1.26 in CI

Numpy installed with pip install causes some issues for pytorch. 1.26 is stable.

Author: vgokhale

.github/workflows/amd_perf_kernel_Integration_tests.yml

@@ -123,6 +123,7 @@ jobs:
           pip uninstall -y triton
           cd python
           pip install -v -e .
+          pip install numpy==1.26.4
       - name: Run Perf Kernels Unit Tests
         run: |
           pytest -vvv ./python/perf-kernels/flash-attention.py

.github/workflows/amd_perf_kernel_postmerge_tests.yml

@@ -84,6 +84,7 @@ jobs:
           pip uninstall -y triton
           cd python
           pip install -v -e .
+          pip install numpy==1.26.4
       - name: Run Perf Kernels Unit Tests
         run: |
           pytest -vvv ./python/perf-kernels/flash-attention.py